39428212 has 6 divisors (see below), whose sum is σ = 68999378. Its totient is φ = 19714104.

The previous prime is 39428209. The next prime is 39428239. The reversal of 39428212 is 21282493.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 9024016 = 5514^2 + 3004^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4928523 + ... + 4928530.

Almost surely, 2^39428212 is an apocalyptic number.

It is an amenable number.

39428212 is a deficient number, since it is larger than the sum of its proper divisors (29571166).

39428212 is a wasteful number, since it uses less digits than its factorization.

39428212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857057 (or 9857055 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 39428212 is about 6279.1888011112. The cubic root of 39428212 is about 340.3577894482.

The spelling of 39428212 in words is "thirty-nine million, four hundred twenty-eight thousand, two hundred twelve".